This is one of the better trails in Whistler, but people tend to be put off by the climb.
Kashmir is a very demanding, relentless type of technical trail. The route, mostly descending, with a few short quick ups, is very steep in spots and naturally technical throughout. It literally does not let up the entire time and can be as much mentally exhausting as it is physically demanding. The climb up to the trailhead is relentless along the extremely steep, sustained, Access Road
The trailhead is a bit tricky to find. Watch carefully on the downhill side (right) of the access road for some rocks that are set just so. You can ride them down onto the start of the trail.
Kashmir is tight singletrack lined with several natural steep and technical sections over roots and rocks. It is a relentless descent with many steep, tight and sharp corners interspersed with short climbs that always seem to catch one in the wrong gear. Its a very exciting and challenging ride which always seems to expose the joy factor in riders and a group will normally have many "whoops" and some prize fighting grins by the end of it.
Unfortunately, it has been shuttled in recent years and the advent of Strava has turned this from a 'hidden' gem (it really did have a walk only hidden entrance) to a trail that is now slightly overused by DH bikes.
Still a great ride and well worth the climb.